Bottle-cap



E. G. BAUM.

BOTTLE CAP.

APPLlCATION FILED JUNE 11. I920.

Patented Nov. 2, 1920.

WITNESSES PATENT OFFICE.

EWALD G. BAUM, OF NATIGK, MASSACHUSETTS.

BOTTLE-CAP.

Specification of Letters Patent.

Patented Nov. 2, 1920.

Application filed June 11, 1920. Serial No. 388,182.

T 0 (ill whom it may concern Be it known that I EWALD G. BAUM, a citizenof the United states, and a resident of Natick, in the county ofMiddlesex and State of Massachusetts, have invented a new and ImprovedBottle-Cap,of which the following is a full, clear, and exactdescription.

This invention relates to bottle caps and particularly refers to animprovement in a cap or closure for milk bottles.

The invention contemplates the production of a thoroughly sanitary leakproof closure applicable to any standard milk bottle to reduce thepossibility of contamination of the contents to a minimum.

In creating this closure, particular attention has been paid to theformation of the mouth of standard milkbottl'es in order that the capwill function properly therewith without the necessity of modifying inany way its present form.

An important feature of the closure resides in the multiplicity ofpoints at which it seals itself to the mouth when applied, therebyinsuring to the consumer a clean, germ-proof staple, packaged to renderthe same impervious to dirt or filth;

A most serious objection to the form of the caps now in use is duemainly to the fact that man consumers are prone to remove the ca flypressing it inward thereby permitting ust, dirt and other filth tocommingle with the contents. The construc tion of this cap not onlyobviates but ositively prevents the opening of the bott e by thismethod.

Another'important object featured by the construction of this cap orclosure is the facile manner with which it may be removed to preventcontamination from sediment adhering to its outer sides.

With the above recited and other objects in view, some of which will beapparent from the following detailed description and claims when read inconnection with the accompanying drawings, reference is made thereto 1nwhich;

Figure 1 is a vertical sectional view through the improved cap, illustrat1ng'its application to a standard milk bottle.

ig. 2 is a plan .view thereof.

Fig. 3 is a fragmentary diagrammatrc view illustrating the cap in itsapplied POSI- tion but unlocked.

gradually decreasing diameters toward the outer end. The portion F ofthe bore which communicates with the neck proper is of a graduallyincreasing diameter toward its lower end immediately adjacent the shoulder. The foregoing is a detailed description of the construction of theneck of a standard milk bottle and forms no part of the presentinvention.

The cap constituting the invention and designed as a closure for abottle of the foregoing outlined construction is preferably constructedof compressed paper, paste board or any other suitable materialcontaining the necessary qualities to perform the functions for which itis intended. The cap is pressed, molded, cast or otherwise formed of apiece of material to rovide the bore covering portion 10 and t e pouringlip housing portion 11, the juncture of said portions being horizontallystepped to provide the horizontal and vertical annular sealing faces 12and 13 and 14, adapted for respective engagement with the horizontalshoulder bore. The internal diameter of the portions D and F of the boreare constant in all makes of bottles but there is a great variation .inthe form and curvature of the pour- 1n be d The pouring lip housing 11is therefore made to accommodate the maximum size ofpouring lip E andbead B. The central bore covering portion 10 is provided with aconcentric circular portion 15 formed by the score 16 which islongitudinally adjustable in the neck to respectively advance or retractthe sealing faces 12, 13

and 14 into engagement with the shoulder C or the portion F of the bore.The pouring lip housing 11 and the bore (COVGliIl portion 10 lyingbetween the vertical sea ing face'14 are provided respectively with C,and portions D and F of the' lig and the diameter of the external thestrengthening ribs 17 and 18. The ribs 17 serve to impart suiticientresiliency to the pourin lip housing to set up a grippin and em racingaction of the housing to sea the extreme outer edge 19 against the outered e of the bead B.

n practice and use of the cap, when the housing 11 is initiallypositioned over the pouring lip as illustrated in Fig. 3, the circularcenter portion 15 is raisedjo its uppermost limit, thereby eflectingaslight radial retraction of the sealing faces 13 and 14 to allow fortheir insertion within their respective seats. hen the cap is properlypositioned, the center portion 15 is forced downward, as illustrated inFig. 4, Jast the horizontal plane of the juncture o the bore cov eringportion to lock and retain the cap in place and the sealing faces inbinding contact with their respective seats. To remove the cap, it isfirst necessary to raise the center portion 15 to effect an unlocking ofthe sealin faces from their seats.

While there has been illustrated and described a single and preferredembodiment of the invention, no limitation is necessarily made to theprecise structural details, as changes and modifications falling withinthe scope of the claims, may be resorted to when desired.

Having thus described my invention, I claim as new and desire to secureby Letters Patent:

1. In a bottle cap, including a bore covering portion, and a pouring liphousing, the juncture therebetween being stepped-to con stitute ahorizontal sealing face and outer vertical sealing peripheries adaptedto respectively engage and co-act with the hori zontal seat and theinclined bores of a milk bottle above and below said seat.

2. The combination with a milk bottle, provided with an external head, apouring lip, an internal horizontal seat, and downwardly and outwardlyflared walls above and below said seat, of a cap including a centralbore covering portion and an annular pouri? lip housing formed at theperiphery thereo the juncture of said ortion and housing being steppedto provi e a horizonand below said seat, of a cap includin a centralbore covering portion and an annu ar pouring lip housing formedat theperiphery thereof, the juncture of said portion and housing beingstepped to provide a horizontal sealing face adapted to engage and'coactwith the seat and superposed vertical sealing peripheries adapted toco-act respectively with the flared walls, said bore covering portionbeing concentrically scored to provide means for shifting the same toefectengagement and disengagement of the sealin face and peripheries.

4. %he combination with a bottle provided with a neck formed with acentral bore, havin a horizontal seat. frustoconical vertical wa lsimmediately adjacent thereto, one of which terminates in an outturnedpouring lip, of a cap adapted to be associated therewith which comprisesa central bore covering portion and an outer pouring lip housing, thejuncture therebetween being horizontally stepped to provide superposedvertical sealing faces and a horizontal sealing faceconnecting the same.

5. The combination with a bottle provided with a neck formed with acentral bore, having a horizontal seat, frustoconical vertical wallsimmediately adjacent thereto, one of which terminates in an outturnedpouring lip, of a cap adapted to be associated therewith which comprisesa central bore covering portion and an outer pouring lip housing, thejuncture therebetween bein horizontally stepped to rovide superposedvertical sealing faces and a horizontal sealing face connecting thesame, the center bore covering portion being axially shiftable torespectively elfect engagement or disengagement of thesealing faces.

ILWALD BAUM.

